package common.util;

import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;

public class ToHtml extends HttpServlet {

	public void service(HttpServletRequest request, HttpServletResponse response,String file_name)
			throws ServletException, IOException {
		String url = "";
		String name = "";

		ServletContext sc = getServletContext();


		// 则你访问这个servlet时加参数.如http://localhost/test/toHtml?file_name=index

		url = "/" + file_name + ".jsf";// 你要生成的页面的文件名。我的扩展名为jsf .

		name = request.getContextPath() + "//home";// 这是生成的html文件名,如index.htm.文件名字与源文件名相同。扩展名为htm

		// ConfConstants.CONTEXT_PATH为你的应用的上下文路径。

		RequestDispatcher rd = sc.getRequestDispatcher(url);

		final ByteArrayOutputStream os = new ByteArrayOutputStream();

		final ServletOutputStream stream = new ServletOutputStream() {
			public void write(byte[] data, int offset, int length) {
				os.write(data, offset, length);
			}

			public void write(int b) throws IOException {
				os.write(b);
			}
		};

		final PrintWriter pw = new PrintWriter(new OutputStreamWriter(os));

		HttpServletResponse rep = new HttpServletResponseWrapper(response) {
			public ServletOutputStream getOutputStream() {
				return stream;
			}

			public PrintWriter getWriter() {
				return pw;
			}
		};
		rd.include(request, rep);
		pw.flush();
		FileOutputStream fos = new FileOutputStream(name); // 把jsp输出的内容写到xxx.htm
		os.writeTo(fos);
		fos.close();
		PrintWriter out = response.getWriter();
		out.print("<p align=center><font size=3 color=red>页面已经成功生成！single<br>http://www.agilejava.org/space/? 233</font></p>");
	}
}